import requests
URL='https://www.okex.com/api/v1/future_ticker.do?symbol=btc_usd&contract_type=this_week'

apiKey = ''
secretKey = ''

headers = {
    "Content-type" : "application/x-www-form-urlencoded"
}

a=requests.get(URL,headers=headers).json()
print(a)
